That has led to some speculation that the networks may move away from serialized shows in the DVR era, both because viewers may increasingly store episodes of serialized shows to watch them in 8-to-10 episode bursts, and because the shows have no repeat value at all.

At least one network other than CBS is starting to conclude the same thing about program trends. "This fall, we're trying to build a spine of shows we can rely on," said Kevin Reilly, the president of Fox Entertainment. Among them: the emerging hit "Bones," a crime drama that solves its cases every week and repeats relatively well.

Sounds right to me.

There has been some discussion in the comments here about Fox moving American Idolto Wednesdays and Thursdays. I'm on record that I don't see it happening. But I'm in the "if it ain't broke, don't fix it" camp. But the article pours a little gasoline on the speculative fires:

While its fall numbers are down, no one doubts Fox's overall strength, not with "American Idol" ready to come back, along with the drama "24." Mr. Reilly may be putting some extra fear in his rivals by floating the idea that Fox may do something different with "Idol" this time around - as in move one of two weekly editions to a regular slot on Thursday nights, the most lucrative night for advertising.